baber/WOPTO huggingface dataset:
Patent GB-1346480-A (GB)
Title: Process for the manufacture of organopolysiloxane-polyoxy-alkylene block copolymers
IPC: C08G65/336
Filed: 1971-08-09
Abstract: 1346480 Organopolysiloxane-polyoxyalkylene block copolymers WACKER-CHEMIE GmbH 9 Aug 1971 [14 Sept 1970] 37365/71 Headings C3T and C3R Organopolysiloxane - polyoxyalkylene block copolymers are prepared by reacting in a first stage an organopolysiloxane possessing Sibonded hydroxyl groups with the chlorine atom(s) of a polyoxyalkylene compound which per molecule contains at least one grouping of the formula where R is H or CH 3 , x=4-50, and in a second stage, the Si-bonded hydrogen atoms of the reaction product thus obtained are reacted with the unreacted Si-OH groups. The first stage is preferably carried out in the presence of an acidbinding agent such as pyridine, α-picoline, tributyl-, di-n-hexyl- or cyclohexyl-amine, and the second stage in the presence of a catalyst, preferably an alkali metal hydroxide, the pH of the second stage preferably being adjusted to 7À0-7À5, the reaction medium preferably being a hydrocarbon, ketone or ether. The organopolysiloxane may be first prepared by hydrolysis of the corresponding chlorosilane and the reaction with the polyoxyalkylene compound is then carried out with the solution obtained. Preferred polyoxyalkylene compounds are (1) those of the formula where R<SP>1</SP> is a monovalent hydrocarbon free from aliphatic multiple bonds and optionally interrupted by ether oxygen atoms, an acyl radical or a radical -OSi(CH 3 )HCl, or (2) addition products of alkylene oxides to hydrocarbons which have 2-6 hydroxyl groups and are free from aliphatic multiple bonds, e.g. glycerol, the OH groups then being converted into HCl(CH 3 )SiO- groups. The polyoxyalkylene compound may be prepared by reaction of methyldichlorosilane with a polyoxyalkylene compound containing OH groups. In Example 1 the addition product of ethylene oxide to methanol is reacted with methyldichlorosilane in toluene and then with a dimethylpolysiloxane, containing one Si-OH group in each terminal unit, in toluene till the 1st stage is complete and then KOH is added to complete the 2nd stage. In Example 2 methyldichlorosilane in xylene is reacted with n-C 4 H 9 (OC 2 H 4 ) 15 (OC 3 H 6 ) 15 OH, prepared from ethylene oxide, propylene oxide and butanol, and then with a mixed hydrolysis product of methyltrichlorosilane, dimethyl dichlorosilane and trimethylchlorosilane. Pyridine is then added and subsequently KOH. In Example 3 a polyoxyalkylene compound made from ethylene oxide and propylene oxide in a molar ratio of 1 : 1 and glycerine is reacted in a similar manner to Example 1. Uses.-Polyurethane foam stabilizer; deemulsifiers for polymer emulsions; levelling agents for paints; rendering hydrophobic fibres antistatic; cosmetics; fire-extinguishing agents; textile reviving agents; cleaning agents for windscreens; filament slip agents; emulsifiers for aqueous dispersions of organopolysiloxanes, hydrocarbons, pesticides or herbicides; rubber tyre tube lubricants.
Patent GB-1042615-A (GB)
Title: Method for operating blast furnaces and blast furnaces for carrying out the method
Inventor: HEIZMANN ERIC GEORGES
IPC: C21B7/10
Filed: 1963-09-24
Abstract: 1,042,615. Cupola furnaces. O.SCHNYDER Sept. 24, 1963, No. 37533/63. Heading F4B. In a hot blast cupola, metal inner casing 1 near the smelting zone is provided with a plurality of inner air heating ducts 2 extending between annular headers 8 and 9 and is spaced from an outer water-cooled annular metal jacket 3. The blast heated in ducts 2 is diverted by a two-way valve 4 either to the stack 7 or into the furnace through nozzles 5. The blast may be preheated before or after it flows through the casing 1, for instance in a recuperator or in a heater above the smelting zone comprising two spaced concentric metal cylinders 13 and 17, Figs. 3 and 4 (not shown). Otherwise this upper zone may be cooled independently by a subsidiary blower. Heat transmission in the space 14 between the inner and outer casings may be influenced by treatment of the emitting and absorbing surfaces, evacuation of said space, provision of conduction ribs, or a supplementary air supply.
Patent GB-1156362-A (GB)
Title: Girdle
IPC: A41C1/00
Filed: 1966-08-23
Abstract: 1,156,362. Girdles. INTERNATIONAL PLAYTEX CORP. 23 Aug., 1966 [25 Aug., 1965; 10 Nov., 1965], No. 37821/66. Heading A3V. In a stretchable girdle or panty girdle having a front panel 14, a rear panel 15 and side panels 11, 12 a band of substantial width extending from the top of the girdle downwardly and around the entire girth of the girdle is more resistant to circumferential stretch than the lower part of the girdle and each side panel includes a portion 16 or 17 having a double thickness of material which extends from the top to the bottom of the girdle and is flanked by portions of single thickness material over an area extending from the bottom of the girdle to the area more resistant to stretch. As shown, Fig. 1, a panty girdle comprises a front panel 14, stretchable only vertically, and a rear panel 15, side strips 28, 29 and an outer layer extending as parts X, Y over the entire area of the girdle, all of two-way stretch material. The outer layer forms the single thickness portions and, with the strips 28, 29, the double thickness portions, of the side panels 11, 12. In an alternative embodiment, Figs. 10 and 11 (not shown), the part of the outer layer overlying the front and rear panels is omitted, the front panel (42) tapers into a crotch portion and the rear panel (46), stretchable only vertically, forms part of the leg portions. Panels (49) corresponding to side strips 28, 29 may have lateral extensions (60) secured to the rear panel (46), Fig. 12 (not shown). In a still further embodiment, Fig. 13 (not shown), the side panels (49) and outer layer (44) meet and are secured together at the upper rear centre region above a small pear-shaped panel (62) which forms no part of the leg portions of the girdle.
Patent GB-844411-A (GB)
Title: Improvements relating to transistor oscillators and to capacity sensitive circuits comprising such oscillators
Inventor: BANASIEWICZ HENRYK
IPC: H03B5/12
Filed: 1957-12-05
Abstract: 844,411. Transistor oscillators. FIELDEN ELECTRONICS Ltd. Dec. 1, 1958 [Dec. 5, 1957], No. 37864/57. Class 40(6). [Also in Group XXXVI] A transistor oscillator comprises a tapped induction 2, the two parts of which are tightly coupled, connected in parallel with two series capacitors 3, 4, and a transistor 1 whose emitter-base path is connected in series with an inductor 15 between the junction of the capacitors 3, 4 and the tapping point 9 on the inductor 2. The ratio of the capacitors 3, 4 is chosen in relation to the tapping point 9 to provide sufficient positive feedback at the base of transistor I to maintain oscillations. The inductor 15 is chosen to series-resonate with the capacitance provided by the capacitors 3, 4 in the feedback path from the emitter of the transistor and in which they are effectively in parallel. Thus when the tapping point is at the centre of the inductor 2, the value of inductor 15 should theoretically be onequarter that of inductor 2, though in practice a slightly greater value is found necessary due to stray capacitances. The inductor 15 also serves to isolate the voltage-sensitive capacitance at the base and collector electrodes from the capacitor 4. It is stated that the circuit may be modified so that the base electrode is connected through the inductor 15 to the tapping point 9, while the emitter electrode is connected for oscillatory currents to the junction point of the capacitors 3 and 4; alternatively the transistor may be connected so that its base electrode and its collector electrode is common to both its input and output circuits. In Fig. 2 (not shown) a probe is connected to the junction of capacitors 3 and 4 and an output circuit is provided to measure the amplitude of oscillation in the circuit, this indicating the proximity of the probe 17 from a conducting object.
Patent GB-972921-A (GB)
Title: Improvements in or relating to nuclear magnetic resonance magnets and electron spin resonance magnets
Inventor: HADFIELD DENNIS
IPC: G01R33/383
Filed: 1962-10-06
Abstract: 972, 921. Gyromagnetic resonance apparatus. SWIFT LEVICK & SONS Ltd. Oct. 1, 1963 [Oct. 6, 1962], No. 37895/62. Heading G1N. [Also in Division H1] The permanent magnets for a nuclear magnetic resonance or electron spin resonance magnet are magnetized after assembly by passing a series of current pulses through the split electrically conducting housing which surrounds each magnet assembly. Magnet assemblies A, B are secured to yokes 1, 2 and each consists of a ferrous backing plate 6 and a cylindrical non-ferrous housing 7 which is secured in a recess in the yoke so that the assemblies are coaxial. A polepiece 12 is secured across the inner end of the housing and a number of permanent magnet sections 13, forming a cylindrical block, are located within the housing by an annular mass of sulphur cement. Each housing has a longitudinal slit 15 along its length so that it can be used as a single turn coil for magnetizing the permanent magnet. Insulating paint is used where necessary to prevent short circuiting. The housings are connected together, in series or parallel, and to a source of current pulses by means of strip conductors C, D, E. High current pulses of short duration are passed through the housings from an ignition circuit to produce a high magnetic field so that the assembly may be aged by demagnetization to produce the required field strength. Where the assembly is enclosed suitable apertures are included to enable the cabling to be readily secured.
Patent GB-1066062-A (GB)
Title: Optical system for ultracentrifuge apparatus
IPC: B04B15/02
Filed: 1964-09-16
Abstract: 1,066,062. Centrifugal separators. BECKMAN INSTRUMENTS Inc. Sept. 16, 1964 [Sept. 30, 1963], No. 37924/64. Heading B2P. [Also in Division G2] A rotor 11 of a centrifuge is rotated at a speed of 60,000 rpm or above to separate the contents of one or more sample cells 12 mounted within wells 13. The or each cell includes two receptacles 48, 52 of sectorshaped cross-section and includes quartz windows (19, 27, Fig. 5 not shown) for deviating the light path through one sector. The windows are positioned at each end of a centrepiece and one window has one surface divided into plane and inclined positions. The receptacles are filled by syringes, one with a solution to be optically analyzed by e.g. ultraviolet light, the other with just the solvent. An optical system (see Division G2) is provided to photograph the results of such an analysis.
Patent GB-899940-A (GB)
Title: Improvements in glycidyl ester copolymers
IPC: C09D125/14
Filed: 1960-11-04
Abstract: 899,940. Copolymerizing glycidyl esters; solutions of such copolymers in mono- and polyepoxides. DEVOE & RAYNOLDS CO. Inc. Nov. 4, 1960 [Dec. 14, 1959], No. 37981/60. Classes 2(5) and 2(6) Cross-linked thermoset solids are made from a glycidyl ester copolymer solution without the necessity for removing solvent by a process which comprises copolymerizing an unsaturated glycidyl ester and a monoethylenically unsaturated monomer in a solvent which is a mono- or poly-epoxide in which the copolymer is soluble under polymerization conditions, which reacts with the copolymer and/or a cross-linking agent under curing conditions and which has a viscosity not exceeding 130 centipoises at the reaction temperature, and thereafter reacting the resulting copolymer in a system which includes a cross-linking agent for epoxide groups. Glycidyl esters specified are the acrylate, methacrylate and crotonate. Copolymerizable monomers specified are styrene, vinyl toluene and various alpha- and arsubstituted halostyrenes and alkylstyrenes, vinyl, isopropenyl, allyl and substituted allyl esters, esters of acrylic, methacrylic, cyanoacrylic, haloacrylic, crotonic, tiglic, maleic, fumaric and glutaconic acids, acrylonitrile, methacrylonitrile, crotononitrile, acrylamide, methacrylamide, N-phenylacrylamide and N-methyl-N- phenylacrylamide. Reactive solvents specified are styrene oxide, glycidol, phenylglycidyl ether, butyl glycidyl ether, glycidyl acetate, glycidyl benzoate, polyepoxides prepared by reacting a polyhydric alcohol or phenol with a halohydrin, e.g. the reaction product of bisphenol and epichlorhydrin, the diglycidyl ether of 1,5- pentanediol, the products obtained by the epoxidation of unsaturated esters, e.g. 3,4- epoxy - 6 - methylcyclohexylmethyl - 3,4 - epoxy- 6-methylcyclohexane carboxylate, and the epoxidation products of drying oils and drying oil acids and esters. Polymerization is accelerated by heat and the use of catalysts such as organic peroxides and hydroperoxides, aluminium and stannic chlorides and boron trifluoride. A mixture of monomer and catalyst may be added gradually as the reaction proceeds. Alternatively, polymerization may be carried out in inert solvent, e.g. xylene, which is removed at the end of the polymerization reaction, and replaced by a mono- or poly-epoxide solvent. The cross-linking of the resulting compositions is assisted by the use of compounds such as dicarboxylic acids and anhydrides thereof, amines, quaternary ammonium salts, boron trifluoride, amino amides or a polyisocyanate. The examples describe the use as curing agents of methyl endo-cis-bicyclo- (2,2,1)-5-heptene, 2,3-dicarboxylic anhydride in admixture with dimethylaminomethyl phenol or polypropylene glycol 750, and trimeric soya fatty acids.
Patent GB-1397639-A (GB)
Title: Method of and apparatus for handling material
IPC: B26D1/03
Filed: 1972-08-15
Abstract: 1397639 Cutting apparatus E I DU PONT DE NEMOURS & CO 15 Aug 1972 [16 Aug 1971] 38013/72 Heading B4B [Also in Division B8] In a method of, and an apparatus for guiding the leading edge of a web 10, e.g. plastics film, to a winding device 60, the web travelling along a path P1 is slit longitudinally, by a pair of movable knives 21 mounted on a carriage 22 movable upwardly by a pneumatic actuator 23, to form a leader strip from the middle of the web, the strip then being cut by a pointed blade (35), Fig. 3 (not shown), to produce a V-shaped leading edge whch is drawn into a pneumatic conveyer 40 defining a path P2 leading to the winding device. When winding has been initiated, the knives 21 are moved apart, towards the web edges so that the strip is broadened out into the full width web.
Patent GB-870840-A (GB)
Title: Improvements in and relating to fabrics
Inventor: KIMMERLING FRANCOIS CHARLES
IPC: D03D15/00
Filed: 1958-11-26
Abstract: 870,840. Cushion covers. COURTAULDS Ltd. Nov. 25, 1959 [Nov. 26, 1958], No. 38058/58. Class 52(4). [Also in Group IX] A fabric for eiderdowns and cushions, enabling an inner cover for the feathers to be dispensed with, is woven from cellulose acetate, the warp being bright and the weft being spun-dyed a grey shade, whereby the fabric is more opaque but the colours obtained on subsequent piece-dyeing are unaffected; the weave is 5-end warp sateen or may be plain. The fabric is impregnated with synthetic resin to make it downproof while remaining permeable to air.
Patent GB-1236753-A (GB)
Title: A method of and draw bench for drawing pipes
IPC: B21C1/22
Filed: 1968-08-09
Abstract: 1,236,753. Drawing. MANNESMANN-MEER A.G. 9 Aug., 1968 [9 Aug., 1967], No. 38135/68. Heading B3P. A large-diameter pipe, i.e. at least 150 mm. in external diameter, is drawn by driving a pipe 14 over a pulling pin 11 bearing against a mandrel bar 9 and mandrel 10, rotating the pipe 14 into the drawing axis, gripping the pulling pin 11 by a drawing carriage 5 which draws the pipe 14 through a die 4 and then pulling the pin 11 back against the mandrel 10 by a cable 12. The pipe 14 is driven over the mandrel 10 by driven rollers 8, whereupon it is rotated by a drum 2 into the drawing axis and pushed into the die 4, a mandrel bar 91 and mandrel 10<SP>1</SP> being simultaneously rotated into the charging position. After drawing, the pin 11 is pulled back to lie against the hollow mandrel 10 by an attached rod 17 and wire cable 18 which is retracted by a motor-driven cable drum mounted on the back of the rotary drum 2. When the pin 11 has been completely pulled back, the pipe 14 is discharged from the apparatus by pivoting levers (24) (Fig. 8, not shown) carrying pipe supporting rollers (25).
Patent GB-1518188-A (GB)
Title: Method and device for determining the phase position between signals
IPC: G01R25/00
Filed: 1975-09-18
Abstract: 1518188 Phase determining circuits ASEA AB 18 Sept 1975 [19 Sept 1974] 38318/75 Heading H3P A method for determing unambiguously the relative phase position between two signals A, B suitable for operating relays, providing indications etc., comprises the steps of feeding the signals to a gate 11 to derive an output signal dependent on the relative phase position, feeding the output signal via a time delay 24 to one input of a bistable flipflop 15 and also feeding one of the input signals or a signal derived therefrom to another input of the flip-flop 15 to derive a final ouput at 23. The time delay ensures that the output 23 is not triggered into an unpredictable state by the simultaneous appearance of signals at the two inputs of the flipflop 15. Depending on whether signal A is leading or lagging signal B, the output at 23 is a periodic pulsating signal or a steady high level positive output. In Fig. 2 (not shown), two circuit arrangements shown in Fig. 1 are connected in parallel with the respective input signals applied being complementary. The combined output is a high level or low level logical output depending on phase lead or lag. The arrangement shown may be modified to determine the relative phase position between three signals.
Patent GB-830561-A (GB)
Title: Concrete construction with protective layer
Inventor: DIJK HENDRIK VAN
IPC: E01C5/00
Filed: 1957-12-11
Abstract: 830,561. Non-metallic resilient mountings. VAN KAMPEN, P. G. Dec. 11, 1957, No. 38486/57. Class 108(3) [Also in Group VIII] A resilient layer of hair felt impregnated with paraffin wax, for protecting a concrete construction, is characterized in that the paraffin wax consists entirely or partly of synthetic and/or micro-crystalline paraffin wax. Approximately equal quantities of hair felt and paraffin wax are used in the layer which may be coated with bitumen and then graphite.
Patent GB-1045649-A (GB)
Title: Chromatographic plates and adsorbent therefor
IPC: G01N30/90
Filed: 1965-09-09
Abstract: Compositions containing silica gel, kieselguhr, alumina, magnesium silicate or cellulose used as adsorbents in thin layer chromatography, contain 0.005-1% of a cellulose ether such as sodium carboxymethyl cellulose, methylhydroxyethyl cellulose, and ethyl hydroxyethyl cellulose.  Binders such as finely-divided silica obtained, e.g., by the hydrolysis of silicon tetrachloride, may also be used.  Layers up to 3 mm. in thickness may be obtained. Homogeneous mixtures of the ingredients are spread on a glass plate in a moulding frame which is removed after drying in air.  The layer is activated by drying in air at 140 DEG  C. for 3 hours.  A U.V. fluorescence indicator may be included in the composition.ALSO:Compositions containing silica gel, kieselguhr, alumina, magnesium silicate or cellulose used as adsorbents in thin layer chromatography, contain 0.005 - 1% of a cellulose ether such as sodium carboxymethyl cellulose, methylhydroxyethyl cellulose, and ethyl hydroxyethyl cellulose.  Binders such as finely divided silica obtained e.g. by the hydrolysis of silicon tetrachloride may also be used.  Layers up to 3 mm in thickness may be obtained.  Homogeneous mixtures of the ingredients are spread on a glass plate in a moulding frame which is removed after drying in air.  The layer is activated by drying in air at 140 DEG C. for 3 hours.  A UV fluorescent indicator may be included in the composition.
Patent GB-1490662-A (GB)
Title: Safety shut-off valve
IPC: F16K41/04
Filed: 1975-02-04
Abstract: 1490662 Valves WILLIS OIL TOOL CO 4 Feb 1975 [6 Feb 1974] 38640/76 Divided out of 1490661 Heading F2V The description is similar to that in parent Specification No. 1,490,661, but the claims relate to the ejection of the spindle packing by fluid pressure.
Patent GB-1213225-A (GB)
Title: Method and apparatus for filling bags
IPC: B65B1/06
Filed: 1968-08-13
Abstract: 1,213,225. Bag filling apparatus. BLACK PRODUCTS CO. 13 Aug., 1968 [14 Aug., 1967; 16 July, 1968], No. 38741/68. Heading B8C. In a bag filling machine, finely divided material is fed from a bin 19 into a flexible sleeve 23 provided at its lower end with a fluidizing hopper 20 having a bag filling flexible horizontal outlet tube 27, 28. In operation, starting from the position in which the outlet tube is pinched shut by valve 33 and material fills the hopper and sleeve, the valve 33 is opened and at the same time air under pressure from pipes 38 is directed against the sleeve. This forces the walls of the sleeve together and the constriction caused thereby travels down the sleeve thus forcing material through the outlet tube and into the bag 32. When the bag is sufficiently full, scale mechanism 26 is tripped to cause the valve 33 to pinch the outlet tube sheet and the supply of air to pipe 38 to be discontinued. The constriction on the sleeve is thus removed and further material falls into the sleeve and hopper readiness for the next cycle. In a second embodiment (see Fig. 13, not shown) the constriction is applied by a pair of vertically movable pinch rolls horizontally reciprocable into and out of contact with the sleeve.
Patent GB-364324-A (GB)
Title: Improvements in air filtering
IPC: A47L9/14
Filed: 1930-12-23
Abstract: 364,324. Reinforced paper. RIPER, L. C. VAN, 929, East 18th Street, Brooklyn, New York, U.S.A. Dec. 23, 1930, No. 38757. Convention date, Dec. 24, 1929. Drawings to Specification. [Classes 96 and 140.] A net-like material, cheese cloth, &c. or metal gauze, to which paper, porous to air, is applied to one or both sides by an adhesive applied to strands only of the net-like fabric, is used as an air filter for a pneumatic cleaner.
Patent GB-850456-A (GB)
Title: Improvements in or relating to electric circuit interrupters
IPC: H01H3/08
Filed: 1958-12-02
Abstract: 850,456. Switch cases; hand actuating devices for switches. WESTINGHOUSE ELECTRIC CORPORATION. Dec. 2, 1958 [Dec. 11, 1957], No. 38789/58. Class 38 (5). A switch (not shown), which may be that of Specification 416,683, is arranged in an enclosure with an openable cover 11 which carries an external handle 13 with a part passing through the cover to operate a resilient member 23 which has an opening 34 for receiving the actuating handle of the switch, the member 23 being formed of an organic elastomeric material, e.g. nylon. The handle 13 carries a cam 17 inside the enclosure, the cam having a pin 18 engaged in a slot 19 in a slide 21 to which the member 23 is adjustably secured by screws 24. The cover is locked in the " ON " position by a spring-pressed lever 37 pivoted at 38 and having a lug 42 passing below a fixed lug 45 on the enclosure, the lever 37 being deflected by a surface 46 on cam 17 to release the cover when the handle is in the "OFF" position. The screw 38 is fixed to lever 37 so that the latter may be deflected by turning the screw from outside the enclosure.